From patchwork Tue Oct 8 22:50:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Deepak Gupta X-Patchwork-Id: 13827166 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 78DA5CF042B for ; Tue, 8 Oct 2024 22:54:16 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1syJ2a-0000V1-6Y; Tue, 08 Oct 2024 18:50:52 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1syJ2V-0000Nw-Fs for qemu-devel@nongnu.org; Tue, 08 Oct 2024 18:50:47 -0400 Received: from mail-pl1-x632.google.com ([2607:f8b0:4864:20::632]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1syJ2Q-00040V-6L for qemu-devel@nongnu.org; Tue, 08 Oct 2024 18:50:47 -0400 Received: by mail-pl1-x632.google.com with SMTP id d9443c01a7336-20bb39d97d1so53774255ad.2 for ; Tue, 08 Oct 2024 15:50:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1728427837; x=1729032637; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=3TSRZRYfN0fde9td8T2Zgyxq8CzAPhtR30l69z8A4EM=; b=GkyYgMbEFx3EH8prlh6rDX1J0V56+9KBbkmbc4FtG2xTmSOKqmG75R9fmh9tfOlhHf 6WulO8dtExtLV2X7tJITYNok4Nj1OAFsl7I9c7F07mHlX6ZBY3KgJjexvX4vIWgw269O FSvOedkMsORmXqnnpXHhwzKBowaeHrabxnGmxCZMiCfJwQ4N8Gnp3T9DvW9U8f86mWgr xVGokXHD2/pmU9Br4LFU8zESBxXrfeWCaandI3eoM9yfGR/gexufTYPNdzhldaOiSqQH wHhi8T/gknjn4W4SABRtGxfdiZQhc8yDdaJS5YAO55cIKS/DCidTtqPyzLLHtT8xT/f5 bEhA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728427837; x=1729032637; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=3TSRZRYfN0fde9td8T2Zgyxq8CzAPhtR30l69z8A4EM=; b=LalIbzTKWp147WtfjhYSzPrKADk/Pzqk/pkWSnHxWiWA8/HHIOFNEg1tm/wk79rWEj ZBaNazJx/vaCkgoPcb0hg+s+17FWBdaoN6zZ9uwtF4eI8m7HfFZctBdVkheChLFbwGlC pJM16QLfdRkrzMXLE7Eh4lqlhhbFVKxTL2L8rkDVAG/d/l+kicYSDyML5lLsveVwp/oq n5pDpTbrFGqBOAq0iKlJ4wVWIUBq3fGcXxURVshh1wWl9egymUOXRPMFmENiQbt06mnw 32fTIRm8nsrQwMsXNLAGqjyA9RlWlyE10Yv0LDS58RqDb3PQpUfKTvFTkLQhX3u8CIAF zvXg== X-Forwarded-Encrypted: i=1; AJvYcCVfqHLTLLFQs5PNPcZCsDxy5qQYnNbnDsmHS7hvGaFcVAwBUbpMuqCo4g73s9YbDCSgAB9CXGyn/FGx@nongnu.org X-Gm-Message-State: AOJu0Yyp14G+lGePMW/f+Ga9f9BGx2HIwxNiTv/WUoc+dgNoYw7XXONs Qkk7W0FwjdintmQM06DLAiNa1zFlJhJX1+v5S+3iFNRN+V+pmTQ7siyeiz2oyyQ= X-Google-Smtp-Source: AGHT+IHbgQ25oCctLtfWh6pOFmJzYRBxOcHQkVRxwI5y1nzIu/oFmpI6As1N5iuluOksTHe7v2oPdQ== X-Received: by 2002:a17:902:e848:b0:20b:41ab:4370 with SMTP id d9443c01a7336-20c63747026mr7810075ad.7.1728427837365; Tue, 08 Oct 2024 15:50:37 -0700 (PDT) Received: from debug.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-20c138af962sm60006105ad.26.2024.10.08.15.50.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Oct 2024 15:50:37 -0700 (PDT) From: Deepak Gupta To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, Alistair.Francis@wdc.com, bmeng.cn@gmail.com, liwei1518@gmail.com, dbarboza@ventanamicro.com, zhiwei_liu@linux.alibaba.com, jim.shu@sifive.com, kito.cheng@sifive.com, Deepak Gupta , Alistair Francis Subject: [PATCH v16 18/20] disas/riscv: enable disassembly for zicfiss instructions Date: Tue, 8 Oct 2024 15:50:08 -0700 Message-ID: <20241008225010.1861630-19-debug@rivosinc.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20241008225010.1861630-1-debug@rivosinc.com> References: <20241008225010.1861630-1-debug@rivosinc.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::632; envelope-from=debug@rivosinc.com; helo=mail-pl1-x632.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Enable disassembly for sspush, sspopchk, ssrdp & ssamoswap. Disasembly is only enabled if zimop and zicfiss ext is set to true. Signed-off-by: Deepak Gupta Acked-by: Alistair Francis --- disas/riscv.c | 40 +++++++++++++++++++++++++++++++++++++++- disas/riscv.h | 1 + 2 files changed, 40 insertions(+), 1 deletion(-) diff --git a/disas/riscv.c b/disas/riscv.c index 2942a5800f..0f9ecd8a14 100644 --- a/disas/riscv.c +++ b/disas/riscv.c @@ -977,6 +977,11 @@ typedef enum { rv_op_wrs_sto = 946, rv_op_wrs_nto = 947, rv_op_lpad = 948, + rv_op_sspush = 949, + rv_op_sspopchk = 950, + rv_op_ssrdp = 951, + rv_op_ssamoswap_w = 952, + rv_op_ssamoswap_d = 953, } rv_op; /* register names */ @@ -2238,6 +2243,11 @@ const rv_opcode_data rvi_opcode_data[] = { { "wrs.sto", rv_codec_none, rv_fmt_none, NULL, 0, 0, 0 }, { "wrs.nto", rv_codec_none, rv_fmt_none, NULL, 0, 0, 0 }, { "lpad", rv_codec_lp, rv_fmt_imm, NULL, 0, 0, 0 }, + { "sspush", rv_codec_r, rv_fmt_rs2, NULL, 0, 0, 0 }, + { "sspopchk", rv_codec_r, rv_fmt_rs1, NULL, 0, 0, 0 }, + { "ssrdp", rv_codec_r, rv_fmt_rd, NULL, 0, 0, 0 }, + { "ssamoswap.w", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 }, + { "ssamoswap.d", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 }, }; /* CSR names */ @@ -2255,6 +2265,7 @@ static const char *csr_name(int csrno) case 0x0009: return "vxsat"; case 0x000a: return "vxrm"; case 0x000f: return "vcsr"; + case 0x0011: return "ssp"; case 0x0015: return "seed"; case 0x0017: return "jvt"; case 0x0040: return "uscratch"; @@ -3081,6 +3092,8 @@ static void decode_inst_opcode(rv_decode *dec, rv_isa isa) case 66: op = rv_op_amoor_w; break; case 67: op = rv_op_amoor_d; break; case 68: op = rv_op_amoor_q; break; + case 74: op = rv_op_ssamoswap_w; break; + case 75: op = rv_op_ssamoswap_d; break; case 96: op = rv_op_amoand_b; break; case 97: op = rv_op_amoand_h; break; case 98: op = rv_op_amoand_w; break; @@ -4034,7 +4047,7 @@ static void decode_inst_opcode(rv_decode *dec, rv_isa isa) case 3: op = rv_op_csrrc; break; case 4: if (dec->cfg->ext_zimop) { - int imm_mop5, imm_mop3; + int imm_mop5, imm_mop3, reg_num; if ((extract32(inst, 22, 10) & 0b1011001111) == 0b1000000111) { imm_mop5 = deposit32(deposit32(extract32(inst, 20, 2), @@ -4042,11 +4055,36 @@ static void decode_inst_opcode(rv_decode *dec, rv_isa isa) extract32(inst, 26, 2)), 4, 1, extract32(inst, 30, 1)); op = rv_mop_r_0 + imm_mop5; + /* if zicfiss enabled and mop5 is shadow stack */ + if (dec->cfg->ext_zicfiss && + ((imm_mop5 & 0b11100) == 0b11100)) { + /* rs1=0 means ssrdp */ + if ((inst & (0b011111 << 15)) == 0) { + op = rv_op_ssrdp; + } + /* rd=0 means sspopchk */ + reg_num = (inst >> 15) & 0b011111; + if (((inst & (0b011111 << 7)) == 0) && + ((reg_num == 1) || (reg_num == 5))) { + op = rv_op_sspopchk; + } + } } else if ((extract32(inst, 25, 7) & 0b1011001) == 0b1000001) { imm_mop3 = deposit32(extract32(inst, 26, 2), 2, 1, extract32(inst, 30, 1)); op = rv_mop_rr_0 + imm_mop3; + /* if zicfiss enabled and mop3 is shadow stack */ + if (dec->cfg->ext_zicfiss && + ((imm_mop3 & 0b111) == 0b111)) { + /* rs1=0 and rd=0 means sspush */ + reg_num = (inst >> 20) & 0b011111; + if (((inst & (0b011111 << 15)) == 0) && + ((inst & (0b011111 << 7)) == 0) && + ((reg_num == 1) || (reg_num == 5))) { + op = rv_op_sspush; + } + } } } break; diff --git a/disas/riscv.h b/disas/riscv.h index 1182457aff..4895c5a301 100644 --- a/disas/riscv.h +++ b/disas/riscv.h @@ -224,6 +224,7 @@ enum { #define rv_fmt_none "O\t" #define rv_fmt_rs1 "O\t1" +#define rv_fmt_rs2 "O\t2" #define rv_fmt_offset "O\to" #define rv_fmt_pred_succ "O\tp,s" #define rv_fmt_rs1_rs2 "O\t1,2"